Ports

Port Number is a 16-bit number. Total port numbers possible are 216 = 65536. All the HTTP stuffs that we do are done on port 80.

Port Numbers from

  • 0 - 1023 are already reserved for HTTP stuffs.

  • 1024 - 49151 are registered for some specific applications. Example - SQL runs on port 1433.

  • 49152 - 65536 can be used by you. Ports tell us which application we are working on or which application the data should go.

Ephemeral Ports determine which process/ instance the data will be received in the client side. Servers at most times have fixed port numbers.

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